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Mendeley readers
Attention Score in Context
| Title |
Accurate lineshape spectroscopy and the Boltzmann constant
|
|---|---|
| Published in |
Nature Communications, October 2015
|
| DOI | 10.1038/ncomms9345 |
| Pubmed ID | |
| Authors |
G.-W. Truong, J. D. Anstie, E. F. May, T. M. Stace, A. N. Luiten |
| Abstract |
Spectroscopy has an illustrious history delivering serendipitous discoveries and providing a stringent testbed for new physical predictions, including applications from trace materials detection, to understanding the atmospheres of stars and planets, and even constraining cosmological models. Reaching fundamental-noise limits permits optimal extraction of spectroscopic information from an absorption measurement. Here, we demonstrate a quantum-limited spectrometer that delivers high-precision measurements of the absorption lineshape. These measurements yield a very accurate measurement of the excited-state (6P1/2) hyperfine splitting in Cs, and reveals a breakdown in the well-known Voigt spectral profile. We develop a theoretical model that accounts for this breakdown, explaining the observations to within the shot-noise limit. Our model enables us to infer the thermal velocity dispersion of the Cs vapour with an uncertainty of 35 p.p.m. within an hour. This allows us to determine a value for Boltzmann's constant with a precision of 6 p.p.m., and an uncertainty of 71 p.p.m. |
Mendeley readers
The data shown below were compiled from readership statistics for 53 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 4% |
| United Kingdom | 1 | 2% |
| Italy | 1 | 2% |
| Unknown | 49 | 92% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 15 | 28% |
| Student > Ph. D. Student | 10 | 19% |
| Professor | 6 | 11% |
| Professor > Associate Professor | 5 | 9% |
| Student > Doctoral Student | 3 | 6% |
| Other | 7 | 13% |
| Unknown | 7 | 13% |
| Readers by discipline | Count | As % |
|---|---|---|
| Physics and Astronomy | 30 | 57% |
| Engineering | 4 | 8% |
| Chemistry | 3 | 6% |
| Materials Science | 2 | 4% |
| Medicine and Dentistry | 1 | 2% |
| Other | 2 | 4% |
| Unknown | 11 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 91. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 October 2015.
All research outputs
#390,734
of 22,830,751 outputs
Outputs from Nature Communications
#6,690
of 47,017 outputs
Outputs of similar age
#6,170
of 279,406 outputs
Outputs of similar age from Nature Communications
#121
of 779 outputs
Altmetric has tracked 22,830,751 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 98th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 47,017 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 55.7. This one has done well, scoring higher than 85% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 279,406 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 97% of its contemporaries.
We're also able to compare this research output to 779 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 84% of its contemporaries.